42-135-43389
Final Completion HorizontalPARKS BELL
ECTOR County · District 8 · COG OPERATING LLC · SPRABERRY (TREND AREA)
Permits
1
Max Depth
12,000 ft
First Permit
2015-10-01
Latest Activity
2015-10-01
Lifespan
< 1 yr
Regulatory Status
Schedule
OFF SCHEDULE
Completion
2016-05-08
Shut-In
—
Plugged
—
EWA / Permit operator mismatch
Scheduling: COG OPERATING LLC ≠ Permit: RSP PERMIAN, LLC
Resolved via: production → COG OPERATING LLC
Production Summary Production data is a work in progress — still being validated against RRC filings. Spot something off or have questions? [email protected]
Cum Oil
— bbl
Cum Gas
— mcf
First Production
2008-06
Last Production
2026-07
Operator History
Chain of Custody
Lease Production
Production is reported at the lease level. View production data, decline curves, and history on the lease page.
Formation Tops (10) Elevation 2,982 ft (GR)
CSV| Formation | Top Depth (MD) | Subsea (+above / −below SL) |
|---|---|---|
| SANTA ROSA BASE (Santa Rosa) | 1,011 ft | +1,971 ft |
| YATES | 3,086 ft | -104 ft |
| SEVEN RIVERS | 3,416 ft | -434 ft |
| QUEEN | 4,260 ft | -1,278 ft |
| GRAYBURG | 4,459 ft | -1,477 ft |
| SAN ANDRES - HIGH FLOWS, H2S, CO (San Andres) | 5,034 ft | -2,052 ft |
| CLEARFORK (Clear Fork) | 7,519 ft | -4,537 ft |
| SPRABERRY | 8,340 ft | -5,358 ft |
| GLORIETA | — | — |
| HOLT | — | — |
As reported by operators on W-2/G-1 completion filings (RRC wellbore records). Depths are measured depth; names appear as filed. Subsea = reported elevation − measured depth (negative = below sea level; vertical wellbores only). View filings & logs at RRC ↗
Perforations (1)
| Interval | Type |
|---|---|
| 9,318–16,565 ft | Perforated |
Casing (3)
| Size | Set Depth | Cement |
|---|---|---|
| 13.375" | 1,600 ft | 1,100 sx |
| 9.625" | 8,590 ft | 820 sx |
| 5.5" | 16,835 ft | 1,600 sx |
Permit History (1)
Applications (1)
Records & Logs
2 completion filings on record · 2 with log images at RRC.
Completion packets open directly (post-2011 filings include attached logs). Log images and the UL library can't be deep-linked — clicking copies the API for you to paste.
No GPS coordinates yet
Well Details
- Well Number
- 3921H
- Max Depth
- 12,000 ft
- Drill Type
- Horizontal
- County
- ECTOR
- District
- 8
- Operator
- COG OPERATING LLC
- Completed
- 2016-05-08
Operator
- Name
- COG OPER LLC
- Location
- MIDLAND
- P-5 Status
- X (filed 2026-06-02)
- Cum Oil (all leases)
- 645,285,792 bbl
- Cum Gas (all leases)
- 305,183,488 mcf
- Activities
- OPRS/G, OPRS/O
- Total Permits
- 4,538